upstream/mercurial-mirror Files · mercurial/thirdparty/concurrent/futures/__init__.py

copies: make calculating lazy for dir move detection's "addedfiles"...

copies: make calculating lazy for dir move detection's "addedfiles" The information calculated here was only needed if (a) --debug was specified, or (b) a directory move was plausibly detected. With tree manifests (especially in my pathological repo and with our custom setup), pre-calculating the `u1` and `u2` can be quite slow, and it's not even necessary in many cases. Let's delay calculating it until we know it's actually necessary. This should have no observable differences in output. ### Performance I ran a rebase command in my pathological repo, rebasing two nodes across several public phase commits, but where no directory copies exist in any of the paths I'm tracking. #### Before ``` Time (mean ± σ): 3.711 s ± 0.061 s [User: 0.3 ms, System: 1.5 ms] Range (min … max): 3.640 s … 3.827 s 10 runs ``` #### After ``` Time (mean ± σ): 868.3 ms ± 10.1 ms [User: 0.5 ms, System: 1.2 ms] Range (min … max): 856.6 ms … 883.6 ms 10 runs ``` Differential Revision: https://phab.mercurial-scm.org/D9567

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        Gregory Szorc
    
thirdparty: vendor futures 3.2.0...

              r37641
            
      # Copyright 2009 Brian Quinlan. All Rights Reserved.

      # Licensed to PSF under a Contributor Agreement.

      """Execute computations asynchronously using threads or processes."""

        Gregory Szorc
    
futures: switch to absolute and relative imports...

              r37644
            
      from __future__ import absolute_import

        Gregory Szorc
    
thirdparty: vendor futures 3.2.0...

              r37641
            
      __author__ = 'Brian Quinlan (brian@sweetapp.com)'

        Gregory Szorc
    
futures: switch to absolute and relative imports...

              r37644
            
      from ._base import (

          FIRST_COMPLETED,

          FIRST_EXCEPTION,

          ALL_COMPLETED,

          CancelledError,

          TimeoutError,

          Future,

          Executor,

          wait,

          as_completed,

      )

      from .thread import ThreadPoolExecutor

        Gregory Szorc
    
thirdparty: vendor futures 3.2.0...

              r37641
            
      try:

        Gregory Szorc
    
futures: switch to absolute and relative imports...

              r37644
            
          from .process import ProcessPoolExecutor

        Gregory Szorc
    
thirdparty: vendor futures 3.2.0...

              r37641
            
      except ImportError:

          # some platforms don't have multiprocessing

          pass

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Gregory Szorc thirdparty: vendor futures 3.2.0...	r37641	# Copyright 2009 Brian Quinlan. All Rights Reserved.
		# Licensed to PSF under a Contributor Agreement.

		"""Execute computations asynchronously using threads or processes."""

Gregory Szorc futures: switch to absolute and relative imports...	r37644	from __future__ import absolute_import

Gregory Szorc thirdparty: vendor futures 3.2.0...	r37641	__author__ = 'Brian Quinlan (brian@sweetapp.com)'

Gregory Szorc futures: switch to absolute and relative imports...	r37644	from ._base import (
		FIRST_COMPLETED,
		FIRST_EXCEPTION,
		ALL_COMPLETED,
		CancelledError,
		TimeoutError,
		Future,
		Executor,
		wait,
		as_completed,
		)
		from .thread import ThreadPoolExecutor
Gregory Szorc thirdparty: vendor futures 3.2.0...	r37641
		try:
Gregory Szorc futures: switch to absolute and relative imports...	r37644	from .process import ProcessPoolExecutor
Gregory Szorc thirdparty: vendor futures 3.2.0...	r37641	except ImportError:
		# some platforms don't have multiprocessing
		pass